JP2010072074A5 - - Google Patents

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Publication number
JP2010072074A5
JP2010072074A5 JP2008236581A JP2008236581A JP2010072074A5 JP 2010072074 A5 JP2010072074 A5 JP 2010072074A5 JP 2008236581 A JP2008236581 A JP 2008236581A JP 2008236581 A JP2008236581 A JP 2008236581A JP 2010072074 A5 JP2010072074 A5 JP 2010072074A5
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JP
Japan
Prior art keywords
transfer
current value
setting mode
toner image
constant voltage
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Withdrawn
Application number
JP2008236581A
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Japanese (ja)
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JP2010072074A (en
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Publication date
Application filed filed Critical
Priority to JP2008236581A priority Critical patent/JP2010072074A/en
Priority claimed from JP2008236581A external-priority patent/JP2010072074A/en
Publication of JP2010072074A publication Critical patent/JP2010072074A/en
Publication of JP2010072074A5 publication Critical patent/JP2010072074A5/ja
Withdrawn legal-status Critical Current

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Claims (4)

トナー像を担持する像担持体と、
前記像担持体との間に転写媒体を挟持する転写部を形成する転写部材と、
前記転写部を通過する前記像担持体から前記転写媒体へトナー像を転写するために、前記転写部に定電圧を印加する転写電源と、
トナー像の非転写時に複数段階の試験電圧を前記転写部に印加して求めた電圧電流特性に基づいて、所定の電流値に対応するように前記定電圧を設定する第１設定モードを実行する制御部と、を備え、
前記制御部は、前記第１設定モードの実行後は、トナー像の転写で用いた定電圧をトナー像の間隔で印加して測定した電流値が前記所定の電流値に近付くように、前記電圧電流特性と前記測定した電流値とに基づいて前記定電圧を変更する第２設定モードを実行することを特徴とする画像形成装置。 An image carrier for carrying a toner image;
A transfer member that forms a transfer portion that sandwiches a transfer medium with the image carrier;
A transfer power source for applying a constant voltage to the transfer unit in order to transfer a toner image from the image carrier passing through the transfer unit to the transfer medium ;
A first setting mode for setting the constant voltage so as to correspond to a predetermined current value is executed based on a voltage-current characteristic obtained by applying a plurality of stages of test voltages to the transfer portion when the toner image is not transferred. A control unit,
After the execution of the first setting mode , the control unit applies the constant voltage used in the toner image transfer at a toner image interval so that the current value measured approaches the predetermined current value. An image forming apparatus that executes a second setting mode for changing the constant voltage based on a current characteristic and the measured current value. 前記制御部は、前記電圧電流特性を変更すべき所定の条件に合致すると前記第１設定モードを再実行し、その後は、再実行で得た新しい前記電圧電流特性に基づいて前記第２設定モードを実行することを特徴とする請求項１記載の画像形成装置。 The control unit re-executes the first setting mode when a predetermined condition for changing the voltage-current characteristic is met, and then, based on the new voltage-current characteristic obtained by the re-execution, the second setting mode. the image forming apparatus according to claim 1, characterized in that the run. 前記第２設定モードで変更された定電圧は、電流値を測定したトナー像の間隔よりも下流の別のトナー像の間隔で印加を開始されることを特徴とする請求項１又は２記載の画像形成装置。   3. The application of the constant voltage changed in the second setting mode is started at an interval of another toner image downstream of the interval of the toner image whose current value is measured. Image forming apparatus. 前記制御部は、前記第２設定モードを、トナー像の所定回数の転写ごとに実行し、前記測定した電流値と前記所定の電流値との差分を複数回の転写に分散して累積的に相殺するように、前記定電圧を変更することを特徴とする請求項１乃至３いずれか１項記載の画像形成装置。 Wherein the control unit, the second setting mode, executed for each transfer of a predetermined number of toner images, cumulatively dispersing the difference between the predetermined current value and current value the measurement a plurality of times of transfer so as to cancel the image forming apparatus according to claim 1 to 3 any one of claims, characterized in that to change the constant voltage.
JP2008236581A 2008-09-16 2008-09-16 Image forming apparatus Withdrawn JP2010072074A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2008236581A JP2010072074A (en) 2008-09-16 2008-09-16 Image forming apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2008236581A JP2010072074A (en) 2008-09-16 2008-09-16 Image forming apparatus

Publications (2)

Publication Number Publication Date
JP2010072074A JP2010072074A (en) 2010-04-02
JP2010072074A5 true JP2010072074A5 (en) 2011-11-04

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ID=42203954

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2008236581A Withdrawn JP2010072074A (en) 2008-09-16 2008-09-16 Image forming apparatus

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JP (1) JP2010072074A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5900056B2 (en) * 2011-06-08 2016-04-06 株式会社リコー Image forming apparatus
JP6071256B2 (en) * 2012-06-06 2017-02-01 キヤノン株式会社 Image forming apparatus
JP6075108B2 (en) * 2013-02-19 2017-02-08 富士ゼロックス株式会社 Image forming apparatus
JP6335648B2 (en) * 2014-05-23 2018-05-30 キヤノン株式会社 Image forming apparatus
JP6728958B2 (en) * 2016-05-16 2020-07-22 株式会社リコー Image forming device
JP7484743B2 (en) 2021-01-22 2024-05-16 コニカミノルタ株式会社 Image forming apparatus, image forming method, and image forming program

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